bbomx



. scribed.

wF, as seen in Fig. 3.

ljtfrmjfggfgr;

Specification forming part of Letters Patent No. 100,594, dated March 8, 1870.

To all whom it may concern:

Be it known that I, JOHN S. BROWN, Vof Schenectady', in the county Schenectady aud State of `New York, have inventeda new and useful Improvement in Adjustable Windlass;

and l do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part of this specicatio This invention relates `to new and useful improvements in windlasses for use on canalboats and on shipboard; and for all the purposes for which windlasses are employed;

` and consists in making a windlass so that it shall adjust itself to the `line of draft in hauling on a line, and so that the power may be increased or diminished, and so that the line or rope maybe readily connected with the drum, as will be hereinafter more fully deln the accompanying drawing, Figure 1 is a sectional side view of the windlass, the sectional parts being on the lines a: .c and yy of Fig. 3. Fig. 2 is a side elevation with parts `broken away. Fig. 3 is a top or plan view.- Fig. 4 is a detailed view of the ratchet-lever. Fig. 5 is a detail of the crank, either lever or crank being used in rotating the drum, as circunistances may require.

The frame of the windlass is made in two parts, A and B, hinged together, as seen atC. i v y D is the drum or cylinder, to which the rope is attached in using the windlass.

The part A of the windlass-frame is of a triangular form. The parts of which it is `composed are connected rmly together at `the rear end by a strong band, with an eyebolt, E, at the extreme en d for fastening the windlass to any suitable fixture on the deck of a vessel, or in any otherV location where the I windlass is to be used.

From the end of the part A the side timbers spread as they extend forward suiciently far apart to receive and support the drum-shaft Thisfshaft is in two parts, G and H, a crank, I, being fitted to the cud of each part.

Gis rigidly connected with one end of the' drum. The other part H is allowed to slide longitudinally in its box, and is connected with the drum by means of a hole in the drum which the shaft enters.

Thehole is indicated by dotted lines, as seen in Fig. 3. The hole is grooved and the shaft is prevented from turning round in it by means of a feather, J which enters the groove where the shaft H is shoved forward into the drum'.

As seen in the drawing, the shaft is drawn out from the drum. This allows the rope to be readily adjusted on the drum.

K is a collar on the shaft which enters the recess in the box when the shaft is pushed into the drum 5 and K is a drop-plate attached to the side of the journal-box, which falls over the shaft outside the collar, and keeps the shaftjin place, as seen in Fig. 2.

On the other end of the drum there is a ratchet-wheel, M. O isa loosening on the shaft, with fnlcruurholes for receiving the end of the pawl-lever P. Ris the pawl attached to the lever and operating upon the ratchet, as seen in Fig. 1. v y

Sis a weighted holding-pawl, which prevents any back motion in the windlass, whether the latter is turned by the ratchet-leveror by the crank.

1n operating the windlass with the lever P,

the partB of the frame is doubled down under the other part, as seen in Fig. l. The cranks I are removed. It is only when a heavy strain is required that the lever and ratchet is required, as for all iight or ordinary draft the cranks are sufficient, and the windlass operated with much greater speed. T represent small truck-wheels on which the windlass rests, and on which it readily adjusts itself to the draft oi the line used from the point of resistance. y

U is a brace which is hinged to the part G at V, and hooked onto a transverserod in the part A, as seen at W.

When the cranks are used, or either of them, the windlass is placed in the position seen in Fig. 2, when it rests on thetruck-rolls w, so that it may readily adjust itself, as before stated. The windlass being confined to the deck at the point E only, it will be seen that this adjustment must be immediate and perfect wheresoever applied.

The cranks I are Yfitted to the shaft with square sockets, and are self-fastening by means of the spring-stops y. (Seen in Fig. 5.)

Having thus described my invention, I claim as ne7 and desire to secure by Letters Pntent- l. A Wndlass-adjustabie by means of a single fastening, as seen at E, substantially as described.

:4. A windlass frame made in two parts jointed together, so as to be adapted for heavy Work, with the ratchet-wheel and lever, y

or for light work with the shaft and its cranks, substantially as described.

3. The shaft J, made capable of being Withdrawn from the drum and attached thereto, as and for the purpose specified.

The above specication of my invention signed by me this 11th day of January, 1870.

JOHN S. BROWN.

Witnesses:

GEORGE W. MABEE, ALEX. F. ROBERTS. 

